Pvc Roofing Membrane Problems

Also exposure to plant roots fungi and bacteria have no negative impact on a pvc roofing membrane.

Pvc roofing membrane problems.

As noted in the chart below created from rs means data if you compare the life cycle costs of a sarnafil roof estimated to last 35 years versus a tpo roof lasting 20 years pvc is the less expensive choice. Plant roots fungi and bacteria have no negative effect on a pvc membrane. Reported problems included seams coming apart leaks and membrane failures especially when exposed to excessive heat over a prolonged period of time. Older pvc roofs in cold weather are prone to shattering.

Pvc on the upper end of the price spectrum there is pvc roofing. Pvc s are documented to last longer than tpo membranes who are still experiencing premature failures. Ib pvc flat roof installation. Gaf everguard tpo is a proven membrane and the 60 mil version is a good all around choice.

Pvc roofs are distinguished by the way they are put together using hot air welding fusion welding of the seams. It is a white reinforced membrane with welded seams and flashings. Pvc membranes are manufactured to remain watertight in extreme conditions. And the reason why pvc membranes are most often heat welded at the seams is because of the strength durability and stability of the material itself which unlike tpo is very difficult to heat weld properly because of the inferior quality of the membrane.

Good luck with your project. A pvc roof is also resistant to uv radiation strong winds fire and chemicals. Heat causes faster loss of the plasticizers that are used in pvc to make it flexible. Also manufacturers strongly advise against installing epdm in the winter because glue freezes and the roof may leak.

Pvc can last well over 30 years. Moreover hot air welding also ensures that the membrane will remain pliable and will be impervious to leaks even if there are puddles of ponding water on the roof. A properly heat welded seam is a much better seam than a glued or taped seam. Tpo on the other hand is inherently flexible and doesn t have plasticizers in it.

All roof products deteriorate over time and pvc has a tendency to shrink pulling the seams lifting corners and potentially causing leaks. Flat roof costs in us. Hot air welding creates a permanent physical bond between the sheets that is actually stronger than the membrane itself making pvc roof installation fast and ensuring that critical areas are permanently watertight.